Error 02 problem

When i switch on the camera the EOS appears on the lcd screen other than that it is blank. After a while an error 02 appears (CF card fault). I have tried previously working cards and they all do the same. The manual says re-format the card but as the lcd screen is blank, this is not possible. The battery is fully charged. Is this a problem with the camera or the card.. My gut feeling says it's the camera.. Please help, Thanks...

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Check that the pins in the camera that connect to the CF card are clean and not bent. You will probably need a good light and a magnifying glass to see into the card slot. If you can see a pin that is bent you could try straigtening it. BEWARE- turn off camera and use a non conducting "stick" ie cocktail or toothpick. Not sure for a Canon but a colleague paid £40 for a new pin assembly for a Nikon with similar problem.
Hope this helps.

To fix this err99 issue, do the following
1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert a fully charged battery, and turn on the camera.
If it appears again, then proceed to next steps
1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
If you still get the error you should send your product to canon for servicing.

To isolate the cause of the issue, we suggest that you do the following:

1. Turn off the camera.2. Remove the lens, battery, and CF card.3. Allow the camera to sit without power for approximately 20 minutes.4. Insert a fully charged battery, and turn on the camera.

Does the "ERR 99" message appear? If it does, then the camera should be serviced. If it does not, then please proceed to the next set of steps:

1. Turn off the camera. 2. Insert the CF card.3. Turn on the camera.4. Format the CF card in the camera.

Does the "ERR 99" message appear? If so, then the CF card is the most likely source of the issue. Try using a different card.

If the message does not appear, please complete the following steps:

1. Turn off the camera.2. Clean the lens contacts by gently rubbing them with a pencil eraser or soft cloth. Be careful that you do not let any debris fall into the camera body.3. Reattach your lens.4. Turn on the camera.

If the "ERR 99" message only appears when one particular lens is attached, then that lens should be examined by a service technician.

If you see the "ERR 99" with a different Canon lens attached, then the camera should be serviced.
I hope this will help .

Do both of these CF cards still function when you connect them to the computer?
Inspect the CF connector on the camera using a flashlight (torch). It's possible that one or more pins on the connector may have been damaged, somehow. If this is the case, the camera will need to be repaired.
Can you still operate the menus after the error message appears? If so, use the menus to reformat the card (see the manual for instructions).

According to Canon, Error code 02 means that "There is a problem with the CF card. Try any of the following: Remove and re-insert the CF card. Format the CF card, use a different CF card."

Are both CF cards the same brand? Sometimes some brands have conflicts with the camera, you might try using two different brands.

It may not be the card, did you try on the third attempt to remove the battery and put it back in? There may be a problem with the contact points where the CF card plugs into the camera, or in the transfer system itself.

The error 02 can come up when there is CF card problem : card not seated properly , card takes too long to come on line from the cameras point of view or if one of the the pins inside CF card chamber is faulty.